TWI730669B - Multifunctional pliers - Google Patents

Abstract

A multifunctional pliers comprising a first jaw jaw unit, a second jaw jaw unit pivotally connected to the first jaw jaw unit, a second jaw jaw unit pivotally connected to the second jaw jaw unit, and the first jaw jaw unit, The second jaw clamping unit forms a linkage member of the four-bar linkage mechanism and a switching member pivotally connected to the linkage member. When the switching member swings to a continuous position relative to the linkage member, it is used to block between the second jaw unit and the linkage member, and restrict the aforementioned four-bar linkage mechanism from rotating to the dead center position, so that the second clamp The jaw unit is movably displaced relative to the first jaw jaw unit. When the switching member swings to a locked position relative to the linkage member, it is adjacent to the first jaw jaw unit and is used to allow the aforementioned four-bar linkage mechanism to rotate to the dead point Position so that the second jaw jaw unit is positioned adjacent to the first jaw jaw unit. Thereby, the continuous cutting function and the clamping function can be combined with only the operation of the switching member, which is not only easy to use and operate, but also simple in structure.

Description

Multifunctional pliers

The invention relates to a hand tool, in particular to a multifunctional pliers.

1, a conventional pliers 1 is illustrated, which mainly includes a first jaw 11, a grip 12 connected to the first jaw 11, a bolt 13 screwed to the grip 12, and a pivot A second jaw 14 on the first jaw 11, a force handle 15 pivotally connected to the second jaw 14, pivotally connected to the force handle 15 and penetrates the grip 12 and abuts A connecting rod 16 on the bolt 13 and a follower 17 pivotally connected to the forcing handle 15 and capable of swinging toward the connecting rod 16.

Thereby, a four-link mechanism is formed between the connecting rod 16, the grip 10, the second jaw 14 and the force applying handle 15, and the second jaw 14 and the first jaw 14 can be driven by the force applying handle 15. When a clamping jaw 11 reduces the distance to clamp an object, and moves the connecting rod 16 to the dead center of the four-linked rod mechanism, the force application handle 15 and the second jaw 14 are positioned and stabilized in a lock status.

When the aforementioned locked state is to be released, the user only needs to push the follower 17 to push the connecting rod 16 out of the dead center, and the aforementioned locked state can be released.

This type of pliers 1 that can be stabilized in the locked state can clamp an object and be used to twist the object. However, when the object is cut or cut, it will often cause the The pliers 1 enters the locked state, so that every time the pliers 1 cuts or cuts the object, it enters the locked state, and needs to dial the driven member 17 and release the locked state. The next cutting or cutting operation is performed, that is, the pliers 1 cannot continuously perform the cutting or cutting operation, which is quite inconvenient in use.

In addition, during the operation process when the pliers 1 is not in the locked state, the follower 17 will swing freely between the force applying handle 15 and hit the force applying handle, which not only makes noise, but also forms between the force handle 15 It’s easy to pinch the fingers.

Therefore, the object of the present invention is to provide a multifunctional pliers with continuous cutting function and clamping function, simple structure and easy operation.

Therefore, the multifunctional pliers of the present invention includes a first jaw clamping unit, a second jaw clamping unit, a linkage member, and a switching member.

The first jaw clamping unit includes a first jaw and a first grip fixed to the first jaw.

The second jaw unit includes a second jaw that is pivotally connected to the first jaw by a first contact point, and a second grip that is pivotally connected to the second jaw by a second contact point.

The linkage member includes a pivotal portion pivotally connected to the second handle by a third contact, and an abutment that is opposite to the pivotal portion and abuts against the limiting surface to form a fourth contact. Rely on the ministry.

The switching element is pivotally connected to the linking element and swings between a continuous position and a locked position relative to the linking element. In the continuous position, the switching element is away from the first handle and is used to block the second handle. Between the handle and the linkage, restricting the second contact, the third contact, and the fourth contact from forming a straight line, so that the second jaw unit can move relative to the first jaw unit. In the locked position, the switching member is adjacent to the first grip and is used to allow the second contact, the third contact and the fourth contact to form a straight line, so that the second jaw unit is positioned adjacent to the first clamp The position of the jaw unit.

The effect of the present invention is that only by operating the switching element, the present invention can have a continuous cutting function and a clamping function, which is not only easy to use and operate, but also simple in structure.

2: The first jaw unit

21: The first jaw

22: The first grip

220: First Space

23: adjusting bolt

231: Limit Surface

3: The second jaw unit

31: Second jaw

32: second grip

321: Convex

320: second space

4: Linkage

41: Pivot

42: abutment

5: Reset the elastic element

6: Rolling pieces

61: rolling surface

7: Switching pieces

71: swing arm

72: blocking part

X: length direction

A: The first contact

B: second contact

C: third contact

D: Fourth contact

:straight line

:straight line

L: straight line

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a top view illustrating a conventional clamp; Figure 2 is a three-dimensional exploded view illustrating the present invention. An embodiment of functional forceps; FIG. 3 is a perspective view of this embodiment; FIG. 4 is a cross-sectional view illustrating that a switching member is located in a continuous position in this embodiment; Figure 5 is a cross-sectional view similar to Figure 4, but a second contact, a third contact and a fourth contact cannot form a straight line; Figure 6 is a cross-sectional view similar to Figure 5, but the switch is located at a Locked position, and the second contact, the third contact and the fourth contact form a straight line; and FIG. 7 is a cross-sectional view similar to FIG. 5, but a second handle is cut with a convex portion and the switch Lean against each other.

Referring to Figures 2, 3 and 4, an embodiment of the multifunctional pliers of the present invention includes a first jaw jaw unit 2, a second jaw jaw unit 3, a linkage 4, a reset elastic element 5, and a Rolling piece 6, and a switching piece 7.

The first jaw unit 2 includes a first jaw 21, a first handle 22 fixed to the first jaw 21, and an adjusting bolt 23. The first handle 22 defines a first space 220 extending along a length direction X and opening toward the second jaw unit 3. The adjusting bolt 23 is screwed to the end portion of the first handle 22 along the length direction X, and has a limiting surface 231 formed at one end and passing through the first space 220.

The second jaw unit 3 includes a second jaw 31 pivotally connected to the first jaw 21 with a first contact A, and a second jaw 31 pivotally connected to the second jaw 31 with a second contact B A second grip 32. The second handle 32 defines a second space 320 extending along the length direction X and opening toward the first jaw unit 2.

The linkage member 4 includes a pivot portion 41 that penetrates the second space 320 and is pivotally connected to the second handle 32 with a third contact point C, and is opposite to the pivot portion 41 and along the length The direction X movably penetrates an abutting portion 42 of the first space 220. In this embodiment, the abutting portion 42 and the pivoting portion 41 form an included angle θ, and the included angle θ is between 140 degrees and 160 degrees.

The reset elastic element 5 is connected to the first grip 22 and the second jaw 31, and constantly causes the second jaw 31 to be away from the first jaw 21 and drives the second grip 32 away from the first jaw. Hold the bias of C21.

In this embodiment, the rolling member 6 is a disc, and is rotatably disposed between the abutting portion 42 of the linkage member 4 and the limiting surface 231 of the adjusting bolt 23, and has contact with the abutting portion 42 and The limiting surface 231 is a parabolic rolling surface 61. The rolling surface 61 is a circumferential surface, and cooperates with the curved portion 421 of the abutting portion 42 of the link 4 to form a fourth contact D.

It should be succinctly that the rolling element 6 is not limited to being a disc. In other variations of this embodiment, it can also be a roller, and the circumferential surface is also the rolling surface 61, or a sphere, and The spherical surface is the rolling surface 61, but it is not limited to this.

The switching member 7 includes two swing arms 71 pivotally connected to the abutting portion 42 of the linkage member 4 and a blocking portion 72 connected to one end of the swing arms 71.

The switching member 7 swings between a continuous position (as shown in FIG. 4 and FIG. 5) and a locking position (as shown in FIG. 6) relative to the linkage member 4. In the continuous position, the blocking portion of the switching member 7 72 abuts against the pivotal portion 41 of the linkage member 4 and is away from the first handle 22. When in the locked position, the blocking portion 72 of the switching member 7 abuts against the abutment portion 42 of the linkage member 4, And it is adjacent to the first handle 22.

4, through the first contact A to the fourth contact D, the linkage 4, the first grip 22, the second jaw 31 and the first grip 22 can form a four-connection The lever mechanism, whereby the abutting portion 42 of the linkage 4, the rolling member 6, and the limiting surface 231 of the adjusting bolt 23 abut against each other, so when the adjusting bolt 23 is turned, the adjusting bolt 23 is changed. When it is screwed with the first handle 22, the adjusting bolt 23 pushes or releases the rolling member 6 with the limiting surface 231, and the rolling member 6 drives the abutting portion 42 of the linkage member 4 along The length direction X is displaced in the second space 320, and the second jaw 31 and the second grip 32 are linked to expand or reduce the distance relative to the first jaw 21 and the first grip 22, respectively, so that the The first jaw 21 and the second jaw 31 are suitable for clamping objects with different outer diameters.

與通過該第三接點C與該第四接點D的直線

無法重合，因此，該連動件4、該第一握柄22、該第二夾顎31 與該第一握柄22間所形成的四連桿機構就不會位於死點。 4 and 5, when the switching element 7 is located in the continuous position, and the second grip 32 is operated to drive the second jaw 31 to reduce the distance relative to the first jaw 21 to cut an object (such as Wire, wire), because the blocking portion 72 of the switching member 7 will be blocked between the second handle 32 and the pivoting portion 41 of the linking member 4, limiting the second contact B and the third contact C It cannot form a straight line with the fourth contact D, that is, a straight line passing through the second contact B and the third contact C

And a straight line passing through the third contact C and the fourth contact D

It cannot be overlapped. Therefore, the four-bar linkage formed by the linkage 4, the first grip 22, the second jaw 31 and the first grip 22 will not be at a dead point.

Thereby, after each time the object is cut, the second jaw 31 will be subjected to the biasing force of the reset elastic element 5 to link the second grip 32 in a direction opposite to the first jaw 21 and the first jaw 21 and the The direction of the first grip 22 is displaced, and the opening between the first jaw 21 and the second jaw 31 is enlarged, so that the second grip 32 can be operated again for the next cutting operation to make the second The jaw jaw unit can be movably displaced relative to the first jaw jaw unit to achieve the purpose of continuous shearing.

Referring to FIG. 6, when the switching element 7 is in the locked position and the second grip 32 is operated to drive the second jaw 31 to narrow the distance relative to the first jaw 21 to clamp an object (such as a tube, Nut), since the blocking portion 72 of the switching member 7 is separated from the pivoting portion 41 of the linking member 4, it will not be blocked between the second handle 32 and the linking member 4. Therefore, the aforementioned four-bar linkage mechanism Will be displaced until the second contact point B, the third contact point C and the fourth contact point D form a straight line L and are located at the dead point, so that the second grip 32 and the second jaw 31 are locked and Positioning. In this way, the object can be clamped and used to twist the object.

When the aforementioned locked state is to be released, the user only needs to pull the second handle 32, or the first handle 22 and the second handle 32 outward, and the linkage member 4 can be activated during the force application process. The abutting portion 42 slides along the rolling surface 61 of the rolling element 6, or drives the rolling element 6 to roll, and slides on the rolling surface 61, thereby, in a labor-saving manner, the linkage element 4 is displaced to the first The second contact point B, the third contact point C, and the fourth contact point D cannot form a straight line L and deviate from the dead center position, and the locked state can be released.

5, it is worth noting that when the switching element 7 is located at the continuous position, the thickness of the blocking portion 72 of the switching element 7 will determine the position of the fourth contact D and affect the shearing of the object. The second handle 32 is operated to reduce the pitch and the magnitude of the shearing force relative to the first handle 22. Therefore, the thickness of the blocking portion 72 is not limited to the thickness shown in FIG. In other variations, as shown in FIG. 7, the second handle 32 has a convex portion 321 formed on an inner surface and abutting against the blocking portion 72 of the switching member 7, thereby reducing the blocking The thickness of the portion 72 can also restrict the second contact point B, the third contact point C, and the fourth contact point D from forming a straight line L.

Based on the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention only needs to operate the switching member 7, and it can have both the continuous cutting function and the clamping function. It is not only easy to use and operate, but also simple in structure.

2. The present invention uses the rolling member 6 that can roll, so that the abutting portion 42 of the linking member 4 can slide on the rolling surface 61 of the rolling member 6, thereby unlocking the second jaw unit 3 in a labor-saving manner Because the rolling element 6 is hidden in the second jaw unit 3 and abuts between the abutting portion 42 and the limiting surface 231, in addition to improving the overall appearance, it is important that the rolling The unit 6 will not shake, not only has a simple structure, is easy to use and operate, but also can achieve a silent effect.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to The scope of the invention patent Inside.

2: The first jaw unit

21: The first jaw

22: The first grip

220: First Space

23: adjusting bolt

231: Limit Surface

3: The second jaw unit

31: Second jaw

32: second grip

320: second space

4: Linkage

41: Pivot

42: abutment

5: Reset the elastic element

6: Rolling pieces

61: rolling surface

7: Switching pieces

72: blocking part

X: length direction

A: The first contact

B: second contact

C: third contact

D: Fourth contact

:直線

:straight line

:直線

:straight line

Claims (10)

A multifunctional pliers comprising: a first jaw clamping unit, including a first jaw, a first grip fixed to the first jaw, and a limiting surface formed on the first grip ; A second jaw unit, including a second jaw that is pivotally connected to the first jaw by a first contact, and a second jaw that is pivotally connected to the second jaw by a second contact Handle; a linkage member, including a third joint pivotally connected to a pivotal portion of the second handle, and opposite to the pivotal portion and abut against the limiting surface to form a fourth joint And a switching member pivotally connected to the linking member and swinging relative to the linking member between a continuous position and a locked position, in the continuous position, the switching member is away from the first handle, And it is used to block between the second grip and the linkage, and restrict the second contact, the third contact and the fourth contact from forming a straight line, so that the second jaw unit can move relative to the first A jaw clamping unit is displaced. When in the locked position, the switching member is adjacent to the first handle and away from the second handle for allowing the second contact, the third contact and the fourth contact to form a straight line , The second jaw jaw unit is positioned adjacent to the first jaw jaw unit. The multifunctional pliers according to claim 1, wherein the pivotal portion and the abutting portion of the linkage form an included angle, and the included angle is between 140 degrees and 160 degrees. The multifunctional pliers according to claim 2, wherein the switching member has at least one swing arm pivotally connected to the abutting portion, and a blocking portion connected to the swing arm, when the switching member is located at the continuous position , The blocking part abuts against the The pivotal portion of the linkage member, when the switching member is in the locking position, the blocking portion is away from the pivotal portion of the linkage member. The multifunctional pliers according to claim 3, wherein, when the switching member is in the locking position, the blocking portion abuts against the abutting portion of the linkage member. The multifunctional pliers according to claim 1, wherein the first grip of the first jaw unit defines a first space extending along a length direction and opening toward the second jaw unit, and the linkage The abutting part of the piece is arranged in the first space. The multifunctional pliers according to claim 5, wherein the second grip of the second jaw unit defines a second space extending along the length direction and opening toward the first jaw unit, and the linkage The pivot part of the piece is arranged in the second space. The multifunctional pliers according to claim 6, wherein the second grip has a convex portion formed on an inner surface and used for contacting the switching member at the continuous position. The multifunctional pliers according to claim 1, wherein the first jaw unit further includes an adjusting bolt, which is screwed to the first grip along the length direction, and has an end formed at one end and penetrates therethrough In the limit surface of the first space. The multifunctional pliers according to claim 1, further comprising a rolling element, the rolling element is rotatably disposed between the abutting portion of the linkage and the limiting surface of the first jaw unit, and has at least contact with The abutting surface is a parabolic rolling surface. The multifunctional pliers according to claim 9, wherein the abutment of the linkage member The part has a curved part matched with the rolling surface, and the rolling element can be one of a sphere, a roller, and a disc.

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